JPS56154830A - Transistor switching circuit - Google Patents

Transistor switching circuit

Info

Publication number
JPS56154830A
JPS56154830A JP5833080A JP5833080A JPS56154830A JP S56154830 A JPS56154830 A JP S56154830A JP 5833080 A JP5833080 A JP 5833080A JP 5833080 A JP5833080 A JP 5833080A JP S56154830 A JPS56154830 A JP S56154830A
Authority
JP
Japan
Prior art keywords
load
current
collector
base
magnitude
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP5833080A
Other languages
Japanese (ja)
Inventor
Mamoru Hatakawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP5833080A priority Critical patent/JPS56154830A/en
Publication of JPS56154830A publication Critical patent/JPS56154830A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
    • H03K17/082—Modifications for protecting switching circuit against overcurrent or overvoltage by feedback from the output to the control circuit
    • H03K17/0826—Modifications for protecting switching circuit against overcurrent or overvoltage by feedback from the output to the control circuit in bipolar transistor switches

Landscapes

  • Electronic Switches (AREA)

Abstract

PURPOSE:To switch a load with a minimum base current of demand by using a transistor for switching the load with the collector connected to the load and by holding the collector-emitter voltage constant without reference to the magnitude of a flowing load current. CONSTITUTION:When load controlling signal S turning on transistor TR1 is applied to TR1, a base current flows from base power source V1 to TR2 via resistance R1 and its collector and emitter, and then TR2 turns on to flow part of the current to the base of TR3 via resistance R6. If a load overcurrent flows through the circuit, the collector-emitter voltage is kept constant without reference to the magnitude of the load current. Thus, switching TR3 switches the load with the minimum base current of demand without influences of the variance in current amplification factor of TR3 and the magnitude of the load current.
JP5833080A 1980-04-30 1980-04-30 Transistor switching circuit Pending JPS56154830A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5833080A JPS56154830A (en) 1980-04-30 1980-04-30 Transistor switching circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5833080A JPS56154830A (en) 1980-04-30 1980-04-30 Transistor switching circuit

Publications (1)

Publication Number Publication Date
JPS56154830A true JPS56154830A (en) 1981-11-30

Family

ID=13081281

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5833080A Pending JPS56154830A (en) 1980-04-30 1980-04-30 Transistor switching circuit

Country Status (1)

Country Link
JP (1) JPS56154830A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6166506A (en) * 1984-09-10 1986-04-05 Hitachi Ltd Controller for electric rolling stock

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6166506A (en) * 1984-09-10 1986-04-05 Hitachi Ltd Controller for electric rolling stock

Similar Documents

Publication Publication Date Title
ES547280A1 (en) Circuit arrangement for switching resistive and inductive electric users in d.c. and a.c. circuits
JPS56154830A (en) Transistor switching circuit
JPS6482708A (en) Mos-fet driving circuit
JPS56154828A (en) Transistor switching circuit
JPS6432716A (en) Auto clearing circuit
JPS56152017A (en) Current controlling system of power source circuit
JPS56127214A (en) Power supply circuit
JPS5698029A (en) Contactless relay
JPS57129177A (en) Transistor inverter
JPS6219055Y2 (en)
JPS56141622A (en) Switching circuit
RU2035841C1 (en) Transistor key with overload protection
JPS57106871A (en) Current detecting circuit
JPS5797360A (en) Breaking circuit for converter power source
JPS5583909A (en) Output voltage switching circuit
JPS54109360A (en) Transistor switch circuit
JPS54141554A (en) Transistor switch circuit
JPS6486712A (en) Single pole circuit breaker
GB1516002A (en) Monolithically integrated threshold switch
JPS54147449A (en) Protective circuit
JPS5448030A (en) Vercurrent protection circuit for swtching regulator
JPS56103534A (en) Pnp current switch circuit
Stoyanov et al. Pulse-Width DC Stabilizer
JPS5721129A (en) Driving circuit for electric valve
JPS56154829A (en) Transistor switching circuit